Door stop



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May 31, 193s.

Filed June l, 1937 Patented May 31, 1938 UNITED STATES PATENT OFFICE 14 Claims.

This invention relates to improvements in door stops.

An object of the invention is to provide an improved door stop which may be mounted on a doorjamb in a position to be engaged by the door as it approaches its closed position and which will effectively prevent slamming of the door.

More specifically, an object of the invention is to provide a door stop which is of relatively inexpensive and durable construction, the parts of which can be easily assembled and disassembled for purposes of renewal or replacement. v

Another object of the invention is to provide a door stop wherein there is a housing having an open side through which a bumper projects so as to be engageable by a door, the bumper being compressible and urged into its outermost posie tion by a spring with means for limiting the in` ward movement of the bumper so that its inward movement will be arrested just prior to the door reaching its closed position so that in the final closing movement of the door the bumper is com--A pressed. In this way, when the bumper is first engaged by the door its inward movement is resisted merely by the action of the `spring but when the door approaches its fully closed position the inward movement of the bumper is arrested and thereafter the bumper is compressed. In this way, as the door reaches its closed position it is first decelerated by the spring at one rate of deceleration but on reaching its fully closed position it is decelerated at a greater rate by the compression of the bumper itself.

With the foregoing and other objects in View, which will be made manifest in the following detailed description, and specifically pointed out in the appended claims, reference is had to the accompanying drawing for an illustrative embodiment of the invention, wherein:

Figure 1 is a View in side elevation of one form of door stop illustrating the door stop as having been applied to a doorjamb;

Fig. 2 is a horizontal section through the door- Y jamb illustrating the door stop in top plan;

Fig. 3 is a sectional view taken substantially upon the line 3 3 upon Fig. 2 in the direction indicated;

Fig. 4 is a view similar to Fig. 3 illustrating the door in that position just prior to having reached its fully closed position;

Fig. 5 is a view similar to Fig. 1 illustrating a slightly modified form of construction embodying the invention;

Fig. 6 is a view in front elevation taken in the -direction of the arrow 6 upon Fig. 5;

Fig. 7 is a view in side elevation similar to Fig.

1 illustrating another alternative form embodying the invention;

Fig. 8 is a front View in elevation of the modification illustrated in Fig. 'l and 5 Fig. 9 is a perspective View of the spring employed.

Referring to the accompanying drawing wherein similar reference characters designate similar parts throughout and referring particularly to l0 that form of the invention illustrated in Figs. l to 4, inclusive, the improved door stop comprises a suitable housing having a top wall I0, a bottom wall II, a back wall I2, and a side wall I3. This housing is designed to be mounted on a doorjamb 15 J so that its bumper is in a position to be engaged by the door D. The housing is adapted to be attached to the jamb such as by screws I4 which are driven through the side wall I3. The front wall I5 has an opening therein indicated 20 at I6, so that the housing has an open forward side from which partially projects a bumper II to be engaged by the door D. At the top and bottom of opening I6 the front wall provides shoulders I8 and I9 which are engageable by lips 20 and 2|, 25 respectively, on the bumper to limit the outward movement of the bumper from within the housing. In the back of the bumper there is formed a wedgeshaped recess 22 adapted to receive the tapered head 23 of the spring means that urges 30 the bumper into its outermost position. 'Ihis spring means is made from a steel ribbon providing two opposed corrugated or reversely bent portions 24 and 25 which are joined by the tapered head 23. The rear end of the spring means 35 is seated upon the laterally bent portions 26 and 2'I of a spring lead which has a central web 28 disposed between the two corrugated portions of the spring and serving to guide the spring in its movement within the housing.

The laterally bent portions of the spring lead which are disposed beneath the bottom portions 26 and 2l of the spring as shown on Figure 3 are bent forwardly and outwardly as indicated at 29 so as to engage the top and bottom of the housing respectively behind internal embossments 30 formed on the top and bottom of the housing. These portions are sprung over these embossments on insertion of the spring lead into the housing and they serve to hold the spring lead in proper position therein. The side edge of the back wall I2 which is adjacent jamb J may be bent forwardly slightly as indicated at 3 I, to form a pocket or recess in the housing against the back wall and if the housing is in the form of a casting rather than a metal stamping, this recess may be cast therein. The purpose of the recess is to keep the spring lead and spring from slipping out of the housing prior to its installation on the doorjamb.

The bumper Il is formed of a good grade of rubber which is compressible. However, it does not compress as readily as the spring, consequently as the door D is closed it first engages the bumper and moves the bumper bodily back into the housing from the position shown in Fig. 3 into the position shown in Fig. 4. During this movement, the convolutions of the spring merely ex and the spring is compressed. The length of the spring lead web 28 is such that it is engaged by the apex of the head 23 just before the door has reached its fully closed position as shown in Fig. 4. This limits and arrests the rearward movement of the bumper just before the door is fully closed. Further movement of the door into fully closed position compresses the rubber bumper. In this way, if the door is suddenly closed or an attempt is made to slam it the spring is rst effective to decelerate the door at one rate of deceleration. However, as the door approaches its extreme closed position as the rearward movement of the bumper is arrested the bumper thereafter is compressed and decelerates movement of the door at a greater rate, thus bringing it to a quick but gentle stop and preventing it from slamming against the doorjamb J.

If for any reason the spring should break or become weakened so that it becomes necessary to replace the spring, this can be easily accomplished by removal of the bumper. As the bumper is formed of compressible rubber it may be vertically squeezed to disengage lips 2D and 2l from behind shoulders I8 and i9. It can then be withdrawn through the opening I6 without requiring the removal of the housing from the doorjamb. This enables the bumper to be replaced if it becomes worn. With the bumper removed the spring can be removed by merely sliding it out through the opening I6 in the front wall. Even the spring lead itself can be removed from the housing without removing the housing from the doorjamb. This is accomplished by springing one of the portions 29 over its embossment and over the adjacent screw and then by tilting it slightly it may be removed through opening i6 in the front wall. The parts of the door stop thus removed from the housing may be replaced through the opening I6 in a similar manner.

The construction as illustrated in Figs. and 6 has the same internal construction as that illustrated in Figs. 1 to 4, the difference being merely in the form of the housing. That form of construction illustrated in these figures is designed to be recessed in the jamb strip of the doorjamb and to this end the front wall is provided with top and bottom extensions 33 and 34 which are apertured for the reception of screws 35. This form of construction may be disposed within a recess 36 in the jamb strip and held in place by the screws 35.

The construction as illustrated in Figs. 7 and 8 also has the same internal construction as that above described. In this form of construction the side I3 is provided with top and bottom extensions 38 and 39 and a rear extension 40. These extensions are apertured for the reception of screws 4|. In this form of construction the jamb strip of the doorjamb may have a recess cut in its side for the reception of the housing in which case, the extensions 38, 39, and 40 serve not only as a. means for attaching the housing but to nish around the recess cut in the jamb strip.

From the above-described construction it will be appreciated that a novel, simple, and advantageous door stop is provided, the parts of which may be easily, quickly, and cheaply constructed and readily assembled. Those parts of the door stop which are subject to possible wear or replacement can be easily removed and replaced through the open front wall of the housing so that removal of the housing from the doorjamb to effect replacement is unnecessary. The construction is such as to provide a double rate of decelerating the door as it approaches its closed position, irst bringing about a slow rate of deceleration when the spring only is being compressed and then a higher rate of deceleration when rearward movement of the bumper is arrested and the bumper thereafter compressed.

It will be noted that the lips 20 and 2| are vertically adjacent recess 22. The tapered head 23 being disposed within the recess tends to expand the bumper vertically to prevent accidental co1- lapse of the compressible bumper and accidental disengagement of the lips from the shoulders. In this way, although the bumper is of compressible rubber, accidental release of the bumper from the housing is effectively prevented.

Various changes may be made in the details of construction without departing from the spirit or scope of the invention as defined by the appended claims.

I claim:

1. A door stop comprising a housing, a compressible bumper retractable in the housing, said bumper being partially disposed within the housing and partially projecting therefrom, spring means urging the bumper into outermost position, and means limiting the inward movement of the bumper so that after its inward movement is arrested the bumper is thereafter compressed.

2. A door stop comprising means providing a housing, a bumper retractable in the housing, said bumper being partially disposed within the housing and partially projecting therefrom, said housing being adapted to be positioned so that the bumper is engageable by a door on closing, spring means urging the bumper into outermost position, said bumper being compressible but less readily than the spring means, and means limiting inward movement of the bumper whereby during iinal closing movement of the door the bumper is compressed.

3. A door stop comprising means providing a housing, a bumper extending through an open side of the housing, there being a wedge-shaped recess in the back of the bumper, lips at the sides of the bumper adjacent the recess, means on the housing engageable by said lips to limit outward movement of the bumper, and spring means engageable with the bumper in the recess for urging the bumper into outermost position.

4. A door stop comprising means providing a housing, a bumper extending through an open side of the housing, there being a wedge-shaped recess in the back of the bumper, lips at the sides of the bumper adjacent the recess, means on the housing engageable by said lips to limit outward movement of the bumper, spring means engageable with the bumper in the recess for urging the bumper into outermost position, and a spring lead in the housing guiding the operation of the spring.

5. A door stop comprising means providing a housing, a bumper extending through an open side of the housing, there being a wedge-shaped recess in the back of the bumper, lips at the sides of the bumper adjacent the recess, means on the housing engageable by said lips to limit outwar-d movement of the bumper, spring means engagecle with the bumper in the recess for urging the bumper into outermost position, and a spring lead in the housing guiding the operation of the spring, said spring lead serving to limit inward movement of the bumper.

6. A door stop comprising means providing a housing, a bumper extending through an open side of the housing, there being a wedge-shaped recess in the back of the bumper, lips at the sides of the bumper adjacent the recess, means on the housing engageable by said lips to limit outward movement of the bumper, spring means engageable with the bumper in the recess for urging the bumper into outermost position, and a spring lead in the housing gui-ding the operation of the spring, said spring lead serving to limit inward movement of the bumper so that further pressure applied to the bumper must result in its compression.

7. A door stop comprising means providing a housing, a bumper projecting from an open side of the housing and having its outward movement therefrom limited, and a spring in the form of a corrugated steel ribbon urging the bumper into outermost position, and means engageable by a part of the steel ribbon limiting inward movement of the bumper.

8. A door stop comprising means providing a housing, a bumper projecting through an opening in the housing and having its outward movement therefrom limited, and a spring in the form of two opposed corrugated steel ribbons joined by a tapered head recessed in the backof the bumper urging the bumper into outermost position.

9. A door stop comprising means providing a housing, a bumper projecting through an opening in the housing and having its outward movement therefrom limited, a spring in the form of two opposed corrugated steel ribbons joined by a tapered head recessed in the back of the bumper urging the bumper into outermost position, and a spring lead disposed between the corrugated ribbons.

l0. A door stop comprising means providing a housing, a bumper projecting through an opening in the housing and having its outward movement therefrom limited, a spring in the form of two opposed corrugated steel ribbons joined by a tapered head recessed in the back of the bumper urging the bumper into outermost position, and a spring lead disposed between the corrugated ribbons engageable by the head for limiting inward movement of the bumper.

ll. A door stop comprising means providing a housing, a bumper projecting through an opening in the housing and having its outward movement therefrom limited, and a spring in the form of two opposed corrugated steel ribbons joined by a tapered head recessed in the back of the bumper urging the bumper into outermost position, said spring being removable through the open side of the housing upon removal of the bumper.-

` l). A door stop comprising means providing a housing, a bumper projecting through an opening in the housing and having its outward movement therefrom limite-d, a spring in the form of two opposed corrugated steel ribbons joined by a tapered head recessed in the back of the bumper urging the bumper into outermost position, and a spring lead disposed between the Corrugated ribbons, said spring lead and spring being both removable through the open side of the housing upon removal of the bumper.

i3. A door stop comprising a housing having an opening therein adjacent which there are shoulders, a rubber bumper' projecting through the opening having portions engageable with the shoulders to limit its outward movement, spring means urging the bumper into outermost position, said bumper being compressible to disengaee it from the shoulders and enable its removal through the opening, said spring means being partially recessed in the back of the bumper to prevent its accidental collapse and consequent disengagement of the shoulders `and release through the opening.

le. A door stop comprising a housing, a compressible bumper disposed within the housing and projecting through a wall thereof, said bumper being retractable in the housing, spring means urging the bumper into outermost position, L

means limiting the outward movement of the bumper, and means limiting the inward movement of the bumper so that after its inward movement is arrested the bumper is thereafter compressed.

TOM TRINGALE. 

